天津地鐵既有線車(chē)站箱體結(jié)構(gòu)改造分析及基于離散元法的地震反應(yīng)計(jì)算.pdf

1、天津大學(xué)碩士學(xué)位論文天津地鐵既有線車(chē)站箱體結(jié)構(gòu)改造分析及基于離散元法的地震反應(yīng)計(jì)算姓名：鮑鵬申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：結(jié)構(gòu)工程指導(dǎo)教師：姜忻良2002.2.1AbstractThispaperincludestwopartsThefirstpartisthatthefiniteelementanalysisintheexcavationandsupportandtheresearchofoldstationcaseReconstructi

2、onandtheconnectionplanbetweenthenewstructureandtheoldarecarriedon，whicharecombinedwiththefensibilitystudyoftheoldstationcaseReconstructiontoTianinMETRONo1Thesecondpartisthatdiscreteelementmethodisappliedtocalculateearthq

3、uakeresponsestonewTianjinMETROtunnel1TheplanefiniteelementprogramisapplledtonamericalmodelinganalysestoExcavationandsupportproblems(opensurfacemethod、opensurfacemethodwithpressurehighrotarysprayreinforcement、freezingmeth

4、od)ofReconstructingschemes，obtainingparametersofsoilbodies、theoldcase、supportpilesinthecourseofexcavationandsupportsuchasdisplacement、stress、innerforceetcSo，thismethodprovidesatheorybasistothecomparisonofdifferentexcavat

5、ionandsupportplansStrengthcheckisgoneontothepossiblestressconditionsinthecourseoftheoldcasereconstructionThispaperputsforwardmultipleconnectionplansfortheoldandnewcaseintheconditionofdoubledesigningloadsaccordingtothepri

6、ncipleofnoweakeningwholestiffnessStrengthanalysesaregoneontoplansMoreover，calculationagainstfloatationiscarryingontothereconstructioncase2Theproperelementmodelandcontactmodelareselectedaccordingtothefundamentalprincipleo

7、fdiscreteelementAccordingtothedynamicrelaxationmethod，thecorrespondingtheoreticalformulaisdeducedandthecorrespondingcalculatingprogramisworkedoutAnexampleforastaticproblemispresentedtoanalyzetheconvergenceofthecalculatin

8、gprogramandtheselectioncalculatingparametersTothespecificconditionofTianjinMETRO，dynamicreactionisanalyzedforMETROstructureandsoilbodyanddynamicreactionofMETROstructureisobtainedundertwoearthquakewavesKeywords：TianjinMET